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7899

Area of a Disk

The area of a disk with radius is .

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Reference: R. J. Hendel, "Proof without Words: Area of a Disk Is ," Mathematics Magazine, 63(3), 1990 p. 188.

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"Area of a Disk" from the Wolfram Demonstrations Project
 http://demonstrations.wolfram.com/AreaOfADisk/
Contributed by: Soledad Mª Sáez Martínez and Félix Martínez de la Rosa




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